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Wastewater Treatment PlantNablus West

Annual Report for Operations and Reuse

2018

January 2019

Prepared by

Eng. Suleiman Abu Ghosh

Eng. Yousef Abu Jaffal

Mr. Sameh Bitar

Eng. Mohammad Homeidan

Eng.Yazan Odeh

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TABLE OF CONTENTS

1. ABBREVIATIONS............................................................................................... 4

2. INTRODUCTION .................................................................................................5

3. BACKGROUND ..................................................................................................6

3.1 Location of the WWTP Nablus West .................................................................................6

3.2 WWTP Nablus West ............................................................................................................7

4. GENERAL PERFORMANCE .............................................................................. 8

5. OPERATION OF WASTEWATER TREATMENT PLANT FACILITIES ............... 8

5.1 Screens and grit/grease removal .......................................................................................8

5.2 Two Primary sedimentation tanks with total volume (1,728 m3) ...................................8

5.3 Two Aeration tanks with total volume (18,000 m3) ..........................................................8

5.3.1 Nitrification and de- nitrification ................................................................................9

5.4 Two Final sedimentation tanks with total volume (7,718 m3) ........................................9

6. OPERATION OF SLUDGE FACILITIES ........................................................... 10

6.1 Two Belt thickeners............................................................................................................10

6.2 Primary thickener tank (548 m3).......................................................................................10

6.3 Anaerobic digester (3,650 m3)..........................................................................................10

6.4 Gas balloon holder (660 m3) .............................................................................................11

6.5 Gas flare ..............................................................................................................................11

6.6 Sludge drying beds ............................................................................................................11

6.7 Belt Filter Presses ..............................................................................................................11

6.8 Other facilities.......................................................................................................................12

6.9 Additional improvement works ............................................................................................12

6.10 Olive Mill wastewater treatment in Nablus WWTP........................................................15

6.10.1 Performance comparison ........................................................................................15

6.10.2 Digester Performance evaluation...........................................................................16

7. SCADA SYSTEM .............................................................................................. 17

8. PERFORMANCE OF WWTP ............................................................................ 17

8.1 Influent flow .........................................................................................................................17

8.2 Cleaning performance .......................................................................................................18

8.3 Power consumption............................................................................................................20

8.4 Gas production....................................................................................................................20

8.5 Desulfurization Unit ............................................................................................................21

8.6 CHP engine .........................................................................................................................22

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8.7 Nablus CHP electrical figures...........................................................................................23

8.8 Online measurement For Nitrogen and suspended solids in the aeration tanks:.....23

9. PREVENTIVE MAINTENANCE......................................................................... 24

10. STAFF TRAINING AND ORGANIZATION STRUCTURE ................................. 24

11. REUSE PROJECTS.......................................................................................... 25

11.1 Introduction..........................................................................................................................25

11.2 Nablus Tertiary treatment..................................................................................................25

11.3 Quality of tertiary treatment systems...............................................................................26

11.4 Summary of Executed Reuse Pilot Projects ..................................................................28

11.4.1 Reuse Inside scheme Project.................................................................................28

11.4.2 Compete Reuse Project ..........................................................................................29

11.4.3 Reuse outside scheme (under implementation) ..................................................31

11.5 Overview on future Reuse projects .................................................................................32

11.5.1 Strategic Reuse Project 2,000+ .............................................................................32

11.6 Results .................................................................................................................................32

11.7 Summary of all reuse projects of Nablus Plant..............................................................33

12. Photovoltaic system........................................................................................ 34

13. Future Improvements ...................................................................................... 35

14. Problems & Challenges in 2019...................................................................... 35

15. Staff .................................................................................................................. 36

16. Annexes ........................................................................................................... 39

Annex 01: Graphs ..........................................................................................................................40

Annex 03: Performance summary ...............................................................................................50

Annex 04: Power consumption ....................................................................................................50

Annex 05: Additional lab Tests in WWTP Lab ...........................................................................51

Annex 06: External laboratory analysis.......................................................................................52

Annex 07 : Quality of the Sludge Tests Results at different moisture content from Birzeit UniversityLabs ..................................................................................................................................................52

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1. ABBREVIATIONS

µs/cm: Micro Siemens per centimeter NM Nablus Municipality

Al: Aluminum element NO3-N: Nitrate as nitrogenAT: Aeration tank Pb: Lead elementB: Boron element PE: Population equivalentBOD: Biological oxygen demand PLC: Programmable Logic Controller

Ca: Calcium element PO4-P: Phosphate as phosphorousCd: Cadmium element SAR: Sodium adsorption rationcfu: colony fecal unit SCADA: Supervisory Control and Data Acquisition

CH4: Methane Se: Selenium element

Cl: Chloride SO4: Sulphate compoundCn: Cyanide element TDS: Total dissolved solids

Co: Carbon monoxide TN: Total nitrogen

Co: Celsius degree TSS: Total suspended solids

CO2: Carbon Dioxide UV: Ultra violetCOD: Chemical oxygen demand WSSD: Water supply and sanitation departmentCr: Chrome element WWTP: Wastewater treatment plantCu: Cupper element WUA: Water user associationDO: Dissolved oxygen Zn: Zink elementFC: Fecal coliform Ni: Nickel elementFe: Ferric elementGIZ: Gesellschaft für International ZusammenarbeitHg: Mercury elementJV: Joint ventureKfW : Kreditanstalt für Wiederaufbaukg/d: Kilogram per dayKm: KilometerKPR: Kinetics- Passavant ReodigerkWh: Kilowatt hourLi/HEC: Consultant Lahmeyer and Hijjawi EngineeringCenterm³: Cubic meterMBAS: Methylene blue active substanceMCC: Motorized control centreMg: Magnesium elementMLSS: Mixed liquor concentrationMn: Manganese elementMoA: Ministry of Agriculture

Na: Sodium elementNH4-N: Ammonium as nitrogen

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2. INTRODUCTION

Water supply and sanitation department (WSSD) is considered one of the important

departments of Nablus Municipality (NM) that provides safe drinking water and sanitation

services to Nablus citizens and several surrounding villages in addition to four refugee

camps, namely, Balata, Ein Beit Elma, New and Old Askar Camps. It is estimated that

230,000 inhabitants receive drinking water services. Water and sanitation department has

a staff of 300 employees including engineers, technicians, skilled and unskilled laborers.

In 1998 the financial agreement for the implementation of Sewage Project Nablus West

was signed between the German Government through KfW and Nablus Municipality. So

far the allocated fund reached up to 39 million Euros. The Project consisted of construction

trunk and interceptor of 12 km and wastewater treatment plant (WWTP) of 150,000 PE.

The WWTP was designed to treat 14,000 m3/day and 8.0 tons of BOD5 per day. The plant

is located near Beit Leed village junction. The wastewater is collected from Zawata, Beit

Eba, Beit Wazan, Deir Sharaf and Qusin in the future by gravity after the implementation of

relevant sewerage networks.

Nablus West catchment area presently has a population of about 120,000. Presently about

95% of the population of Nablus west is connected to the sewerage network. The main

objective of the sewerage project Nablus West is:

Improve the environmental and health conditions in upper Wadi Zumer

Protect the surface and groundwater from pollution

Reuse of treated wastewater for irrigation purposes

The construction works of the project have been completed in July 2013; however it was

put into operation in November 2013. The consultant Lahmeyer and Hijjawi Engineering

Center (Li/HEC) who provided the consultancy services for Nablus west sewerage project

had issued the performance certificate to the contractor the JV of Kinetics- Passavant

Reodiger (KPR) on September 23th 2015.

Operation assistance (OA) for two years at the cost of 1.10 million Euros has been

allocated through KfW to provide operational assistance to operate, guide and train NM

WWTP staff. The OA was provided by the KPR which was concluded in November 2015.

A second phase of OA financed through KfW is provided now by Consul Aqua to guide the

WWTP staff on part time basis.

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3. BACKGROUND

3.1 Location of the WWTP Nablus WestThe WWTP Nablus West is located approx. 12 km West of Nablus City and lies on a much

lower orthographical level than Nablus City. Ideally, wastewater is flowing into the

treatment plant through gravity sewer system.

Figure (1): Section of a topographic map in Figure (2): Direction of slopethe project area

Figure (3): Overview of WWTP Nablus West

WWTPNablus West

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3. BACKGROUND






WWTPNablus West

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3. BACKGROUND






WWTPNablus West

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3.2 WWTP Nablus WestThe WWTP Nablus West is operated as an activated sludge process with a mechanical

treatment, a biological treatment and a sludge treatment steps with gas utilization. In Figure

(3) shows an overview of the WWTP Nablus West. Three construction stages have been

planned for the WWTP Nablus West: stage 1 with a design horizon in 2020, stage 2 with

design horizon in 2025 and a final stage 3 with design horizon in 2035. During the first

construction stage only the colored parts in green of the WWTP (Figure 4) were

implemented.

Figure (4): WWTP Nablus West

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4. GENERAL PERFORMANCE

Around four millions six hundred and forty seven thousands (4,647,000 m3) cubic meters

of wastewater were treated in the year 2018, with an electrical consumption of three

millions one hundred and forty eight thousands (3,148,000 kWh). During last year, in

general the average lab results were in line with the Palestinian standards. The average

effluent concentration of BOD5 was 7.8 mg/l and TSS was 10 mg/l. By these results, the

treatment efficiency in terms of BOD5 and TSS were 98 % and 98% respectively.

5. OPERATION OF WASTEWATER TREATMENT PLANTFACILITIES

5.1 Screens and grit/grease removalThe wastewater treatment in Nablus west began with a screening unit. The screening unit

consisted of two types of screens. The first is coarse screen (bar space of 5 cm), and the

second was fine screen (bar space of 5 mm). The main objective of this unit was to protect

the facilities from plastics, woods, rubbish and etc. The screened solid material removed by

the screen conveyors for disposal.

Grit/grease removal unit was designed to remove sand and grits/grease from wastewater.

The grease was sent to the anaerobic digester however, grits/sands were washed out by

treated wastewater in the grit classifier to sanitary disposal.

5.2 Two Primary sedimentation tanks with total volume(1,728 m3)

In this unit, around 60% of organic suspended solids were settled down in two rectangular

tanks forming primary sludge. The primary sludge was thickened in a gravity primary

thickener to increase its concentration from 1% to 4% to be digested in the anaerobic

digester in a later stage.

5.3 Two Aeration tanks with total volume (18,000 m3)The biological wastewater treatment in the aeration tanks was the core of the WWTP. High

concentration of special aerobic bacteria and other microorganisms were activated in the

aeration tanks at existence of high concentration of oxygen called activated sludge. The

soluble and other suspended organic material was digested by bacteria .This unit has to be

controlled in terms of the concentration of activated sludge and dissolved oxygen content.

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Almost 90% of the power consumption of the WWTP is required to operate theses two

tanks.

5.3.1 Nitrification and de- nitrification

The plant was designed for COD removal. Nitrification and de-nitrification also phosphate

elimination was not foreseen in the first stage. However, on the 17th of March, 2015 the

plant started to perform nitrification, and de- nitrification process in the aeration tanks in

addition to carbon removal process.

Inlet AT

Outlet AT

Figure (5): Aeration tank with implemented de-nitrification zone

In areas where oxygen was reduced, there were bacteria starting a de-nitrification process.

In de- nitrification, elemental gaseous nitrogen is produced from nitrate and nitrite and

released to the atmosphere.

5.4 Two Final sedimentation tanks with total volume(7,718 m3)

The activated sludge was settled down in the two circular final sedimentation tanks. The

settled bacteria was withdrawn from the bottom of the tanks and returned back to the

aeration tanks as returned sludge. This recycling of activated sludge was necessary to

maintain certain concentration of activated sludge (around 2-3% SS) with optimal sludge

age, however the excess sludge was pumped to the mechanical thickeners for further

treatment in the anaerobic digester.

aerobic anoxicaerobic/anoxic

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6. OPERATION OF SLUDGE FACILITIES

6.1 Two Belt thickenersThe excess sludge was withdrawn via pumps to the belt thickeners where polymer was

added. This machine thickened the excess sludge up to 1% to 6% SS concentration. After

thickening it was mixed with the primary thickened sludge to be pumped later on to the

digester.

6.2 Primary thickener tank (548 m3)The settled primary sludge in the primary sedimentation tanks was sent to the primary

gravity thickener circular tank. In this unit, the sludge was thickened to reach 6% which was

treated in the anaerobic digester.

6.3 Anaerobic digester (3,650 m3)The thickened primary sludge and thickened excess sludge were treated in the anaerobic

digester; the retention time is 21 days. Temperature and pH were carefully monitored to

maintain optimum conditions for the anaerobic bacteria in the digester (pH= 6.8-7.5), the

solid content was around 3-4%. The biogas produced from the digester normally contained

33% of CO2 and 66% of methane gas. The sludge was heated up via boiler to maintain

mesophilic conditions in the digester around 36 Co.

Figure (6): Digester tank in Nablus West WWTP with the gas flare

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digester.











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digester.











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6.4 Gas balloon holder (660 m3)Produced CH4 gas from the digester was treated in stone filters to remove the humidity and

then store it in the gas holder.

6.5 Gas flareThe excess gas was burned by the gas flare. It started flaring when the storage in the

balloon reaches up to 90% and stop when it reached 80% of the volume of gas balloon.

6.6 Sludge drying bedsIn emergency cases, the digested sludge was pumped to the drying beds for drying via

natural evaporation. There were 11 beds with total area of 11.5 donum. After drying, the

sludge was transported to the sludge storage yard for disposal into Zahret Al-Fenjan

sanitary landfill site near Jenin.

6.7 Belt Filter PressesTwo belt filter presses were used to dewatering the digested sludge coming from the

digester to have solids more than 25%. Special polymers were used to improve the

efficiency of these machines as shown in Figure (7).

Figure (7): Dry solids content after mechanical dewatering.

0.2

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r

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Dry solids content %

Average = 25%

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6.8 Other facilities

Other equipment were available for the sustainability of the operation of the WWTP such as

well-equipped lab, stand by generator, spare parts, administration building and workshop.

6.9 Additional improvement works

Nablus Municipality has always has a strategy to improve the performance. In 2018, kfW

funded a project to implement additional improvements on the plant. Four main

improvements have been implemented in the plant:

Constructing a stone trap.

Constructing a storage tank for olive mill wastewater.

Covering and Odour control of primary thickener tank.

Rehabilitation of the cladding of digester.

The following photo’s are depicting the above implemented works.

Figure (8): Stone trap at the inlet of WWTP

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Figure (9): Storage tank of olive mill wastewater

Figure (10): Odor control (bio filter to treat the gases of the primary thickener and Zibarstorage tanks)

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Figure (11): Covering of the primary thickener tank

Figure (12): Cladding Rehabilitation of Anaerobic digester roof insulation.

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6.10 Olive Mill wastewater treatment in Nablus WWTPBy Environmental control unit (ECU) coordination with Nablus WWTP, suction trucks which

belongs to private sector have been hired to transport olive mills wastewater (OMW)

produced from the following olive mills (Aladham from Nablus, Abu-Shadi, Abu-laila from

Qusin village, olive mills from Beit Leed). About 390 m3 have been transported and stored

in the newly constructed storage tank that was pumped into the anaerobic digester for

treatment. The feeding dose rate was gradually increased from 5 to 16 m3/day. The gradual

increase was aiming to alleviate the shocks load to the digester biomass. Performance

efficiency of the digester was monitored and compared to the normal operation conditions.

The results obtained indicated that, biogas production rate was increased in the time of

OMW feeding. During a month of the experiment, which was started in 10/10/2018 and

ends on 10/11/2018, the overall biogas production was increased by around 12,000

Nm3/month. Due to this increase in biogas, the electrical production was increased by

around 30,000 kWh, which is about 14,000 NIS. No inhibition was noticed by OMW and its

phenolic compounds. The disposal strategy of OMWW is possible as it was treated in the

digester without any negative impacts on the performance. In addition it was feasible in

terms of gas production and electrical savings. This is in-line with the strategy of NM to

protect the environment by avoiding dumping OMW in nearby Wadies.

6.10.1 Performance comparison

In this section, comparison figures were drawn to depict the difference of the digester

performance in terms of different disturbances. Figure (13) shows total VS load that fed to

the digester versus the biogas production. It shows a decrease in total VS load fed to the

digester at the date of OMW experiment began, where at the same time the biogas

production has increased before the experiment. This proves that a change in VS quality

has occurred once OMW fed to the digester which increased the biogas production.

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Figure (13): Total organic VS load relationship with real biogas production

6.10.2 Digester Performance evaluation

The digester reference point of operation data is compared with the case of OMW dosing.

Alkalinity, and Organic Acid, are evaluated and figured. No tangible change in pH was

happened. Figure (14) shows the relationships of Alkalinity and organic acid in the digester

before, during and after experiment.

Figure (14): The behavior of qualitative parameters of Nablus plant digester

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325350375400425450475500525550575600625650675700725750775800

7-Oct-18 17-Oct-18 27-Oct-18 6-Nov-18 16-Nov-1826-Nov-18 6-Dec-18 16-Dec-18

Date

Total AlkalinityOrganic Acids

(Total Alkalinity(وفق معدل النقل 7

StartOMWdosing

EndOMWdosing

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PrimaryThickened VSload kg/d

ExcessThickenedkg/d

OMW VS loadkg/d

Total VS loads

BiogasProductionNm3/d

وفق معدل 10Total VS(النقل

loads)

وفق معدل 10Biogas(النقل

ProductionNm3/d)

325350375400425450475500525550575600625650675700725750775800

16-Dec-18

Org

anic

Aci

d pp

m a

s Ac.

Ac

StartOMWdosing

EndOMWdosing

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7. SCADA SYSTEM

The sewage treatment plant was controlled by using Programmable Logic Controller (PLC)

and Supervisory Control and Data Acquisition (SCADA). The PLC’s are located in several

substations (electrical switch rooms) within the wastewater treatment plant.

The wastewater treatment plant was controlled by PLC’s. PLC’s and their support

equipment were computer controlled system that was capable of remote managing of the

plant’s operation. The control was executed from the analogous and digital in-puts / outputs

received from instruments, drives and MCC and from signals received from the SCADA

system.

Figure (15): Nablus WWTP SCADA system

8. PERFORMANCE OF WWTP

8.1 Influent flowThe performance of WWTP Nablus West during 2018 was analyzed on the basis of the

plant loading which had been monitored regularly. Two aeration treatment tanks were

mainly in operation, the hydraulic treatment capacity of the plant was sufficient and the

amount of inflow in most cases under design capacity. Only extreme weather conditions

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7. SCADA SYSTEM








system.







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7. SCADA SYSTEM








system.







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(heavy rain) led to capacity problems. The hydraulic and pollutants loading and the actual

performance of WWTP Nablus West from January 2018 to December 2018 were analyzed.

Figure (16) Shows the hydrographs of the daily wastewater flows which were treated in

WWTP Nablus West. It became clear that no strong fluctuation of the daily wastewater

flows occurred during summer time. However, in the winter time the fluctuation was

sometimes very high due to heavy rain events. In such cases, the bypass to Wadi prior to

the WWTP had to be used for the plant protection design capacity.

The average daily wastewater flow in the year 2018 was approximately 12,895 m³/day .

The amount of incoming wastewater will increase gradually over the next years.

Figure (16): Hydrograph of the daily treated wastewater inflow

8.2 Cleaning performanceThe current daily wastewater pollution load treated in WWTP Nablus West in terms of COD

and SS were calculated. The average daily COD load was approximately 12,344 kg/d and

the total COD load over the year of 2018 was 4,505,000 kg/year. The COD load at the

effluent in the same period was 185,420 kg/year. The cleaning performance is

approximately 96%.

500070009000

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Inflow pattern in 2018m3/dayInflow pattern in 2018 m3/day

Inflow pattern in(وفق معدل النقل 7 2018 m3/day)

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Figure (17): Influent and effluent concentration of COD

The hydraulic and pollutant load of WWTP Nablus West as well as site conditions had an

effect on the performance of the WWTP. The average daily suspended solids inflow was

approximately 5,654 kg/d. The reduction of suspended solids was in average

approximately 97%.

Figure (18): Suspended solids of the inlet and outlet of the treatment plant

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COD Inlet and outletCOD In mg/l

COD out mg/l

PerformanceEfficency %

وفق معدل النقل 3)COD In mg/l)

وفق معدل النقل 3)COD out

mg/l)

0.0050.00

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SS in mg/l

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وفق معدل النقل 3)SS in mg/l)

وفق معدل النقل 3)SS out mg/l)

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8.3 Power consumptionOptimization of operation was one of the most important challenges in municipal WWTPs.

The specific power consumption of similar WWTP is about below 0.85 kWh per m³ of

treated wastewater, and below 0.8 kWh of kg COD removed, however in Nablus WWTP is

0.69 kwh/m3 and is 0.74 kg/COD removed respectively. Deviations from this value can be

attributed to the circumstances of daily plant operation.

Figure (19): Monthly values of power consumption per treated m³ of wastewater

8.4 Gas productionThe average gas production in 2018 was 2,127 nm3/d, and was fed to CHP to produce the

electrical and thermal powers, part of the produced thermal power was used for heating up

the digester.

0.40.435

0.470.505

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0.610.645

0.680.715

0.750.785

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0.890.925

0.960.995

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Nov De

c

Kwh/

Trea

ted

m3

month -2018

Kwh/Treated m3 Average =0.69 Kwh/Treated m3

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Figure (20): Gas production of the digester

In 2018 more regular operation of the digester was done and as a result a substantial

increase in biogas occurred. Biogas flowmeters were optimized for reading the flow in

normal cubic meters instead of kilogram. This optimization was done with reference of new

installed sensor of biogas flowmeter in the combined heat and power plant (CHP).

8.5 Desulfurization UnitThe desulphurization unit of biogas is considered as one of the main components of CHP

unit, which ensures the sustainability of operation of the CHP. It treats the produced biogas

from anaerobic digester from H2S gas and Siloxane. Such compounds are dangerous for

the engine and could cause engine failure.

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11001300150017001900210023002500270029003100

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rod

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ay

2018

Gas production 2018 Average = 2127 kg/d

Gas ProductionNm3/day

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Figure (21): Nablus West desulfurization unit

8.6 CHP engineOne of the best energy efficiency practices in WWTP’s is utilizing the biogas through CHP

engine. Nablus CHP engine has been put in operation in 18/6/2017. It is burning the

treated biogas which treated in desulfurization unit and produce electrical and thermal

power. It was covered around 60% of the total electrical consumption of Nablus plant. the

future planning is to cover around 80% of total electrical demand is foreseen as more

organic load reaches to the Treatment plant from the nearby villages of Nablus West.

Figure (22): Nablus West CHP engine.

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8.7 Nablus CHP electrical figuresThe electrical consumption of the plant and CHP production are monitored on daily.

Figure (23): Electrical consumption of plant with comparison of CHP electrical production

8.8 Online measurement For Nitrogen and suspended solids inthe aeration tanks:

In 2017 an online system for measuring Nitrogen with suspended solids have been

installed in the aeration tanks, four sensors (NH4, NO3) and two (suspended solids) at

specific locations in the aeration tanks which help controlling the nitrification/denitrification

process efficiently.

By direct on line measurement of such parameters, an optimization of energy could be

achieved in terms of oxygen supply via the surface aerators which are considered the

prominent energy consumers among other units, as a result a significant reduction of

wastewater energy demand.

A complete connection to SCADA will be optimized in terms of Oxygen supply from surface

aerators.

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Avg. dailyelectricalproduction of CHPunit

Avg. dailyelectricalproduction of CHPunit since start ofoperation untilnow = 4722 kwh/d

Avg. dailyelectricalconsumption ofNablus plant =8620 kwh/d

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9. PREVENTIVE MAINTENANCE

From the beginning of the plant operation maintenance works and plans had been

conducted in accordance with the periodic and routine works of machines manuals. These

works could be classified as preventive maintenance. Preventive maintenance was done

by Nablus WWTP staff.

It is worthy to mention that 84 maintenance operations were done in 2018 for different

units and equipments.

10. STAFF TRAINING AND ORGANIZATION STRUCTURE

Training was essential for the sustainability of the plant. The staff of Nablus plant had been

trained through KfW in the fields of process operations such as:

Practical training on routine and preventive maintenance of CHP and biogas bio

filter for the electro mechanical staff by the Garman supplying co.

Attending the iFAT exhibition held in Munich in May 2018.

Training in Japan for operation and maintenance of sewerage systems.

25

11. REUSE PROJECTS

11.1 IntroductionMiddle East developing countries are facing a scarcity in water resources. They depend on

groundwater as the main source. The last three decades were witnessed an urban

renaissance in these countries which includes sewer systems construction. Unfortunately,

this progress was done without going for a proper treatment projects for the collected big

quantities of urban sewers propagates a negative impact on the main source of water. Lack

of financing to construct wastewater treatment projects was the main reason for this

environmental ignorance. In Palestine, Nablus was funded by KfW to construct two

wastewater treatment plants in east and west of the city. In 2015, Nablus West wastewater

treatment plant was put into operation and created an alternative source of water. Nablus

Municipality strategy was concentrated into insuring a sustainable operation before going

ahead for tertiary treatment and starting reuse projects. After two years of sustainable

operation for the plant, pilot reuse projects have been done to improve the quality of treated

water using tertiary treatment to be fit for agricultural reuse. Lands inside and outside the

plant were planted and irrigated by tertiary treated wastewater that meets 34 quality items

required by the specification of Ministry of agriculture for restricted irrigation (law 34-2012).

Alfalfa and various kinds of trees are planted and irrigated by the projects. The treated

water is distributed to farmers by irrigation networks which have flowmeters for accounting

the sold water under the local law conditions.

11.2 Nablus Tertiary treatmentThree different tertiary treatment systems have been installed in Nablus plant for supplying

tertiary water for reuse pilot projects. The First system was funded by KfW which consists

of sand filtration units and UV disinfection. This system has a capacity of 10 m3/hr and

serving 40 donums as educational pilot reuse project inside the plant. The second system

was funded by USAID through compete project which consists of gravel filtration units and

chlorination. This system has a capacity of 60 m3/hr and Pumping the tertiary treated water

to the reservoir with capacity 750 m3 and then distribute the water by gravity to the farmer’s

land (140 donums) outside the plant south area of the treatment plant. The Third one

funded by KfW which consists of Disc filter units and UV disinfection. This system has a

capacity of 100 m3/hr and serving 120 donums as another pilot reuse project outside the

plant North area between the main street and the treatment plant.

26

11.3 Quality of tertiary treatment systemsTable (1): Quality of the treated water (NWWTP) with comparison of reuse standard (34/2014) 2017

Maximum limits forchemical andbiologicalproperties

KfW reuseproject

July 2017

USAIDreuseproject

July 2017

Quality of Tech. Spec 34-2014

Method of TestingHighQuality(A)

GoodQuality (B)

MediumQuality(C)

LowQuality(D)

(BOD5) mg/l 14.8 5 20 20 20 60 Birzeit Lab, StMemethodsuspended solids

(TSS) mg/l<2 6 30 30 30 90 Birzeit Lab, StMe

methodFC (Colony/100ml) Nill 2 200 1000 1000 1000 Birzeit Lab, Iso method(COD) mg/l 45.3 25 50 50 100 150 Birzeit Lab, StMe

methodDissolved Solids(TDS) mg/l

975 820 1200 1500 1500 1500 Birzeit Lab, StMemethodpH 7.74 7.54 6--9 6--9 6—9 6--9 Birzeit Lab, StMemethodFat, Oil, & Grease

mg/l4 4 5 5 5 5 Birzeit Lab, StMe

methodPhenol mg/l - BDL 0.002 0.002 0.002 0.002MBAS - <10 15 15 15 25NO3-N ppm BDL 2.46 20 20 30 40 Birzeit Lab, StMe

methodNH4-N mg/l 1.3 1.4 5 5 10 15Total nitrogen 6.6 11.06 40 40 40 40CL ppm 260.82 239.38 400 400 400 400 Birzeit Lab, CIA methodSO4 ppm 88.73 97.40 300 300 300 300 Birzeit Lab, CIA methodNa ppm 177 197 200 200 200 200 Birzeit Lab, ICP

instrumentMg ppm 26.2 21.9 60 60 60 60Ca ppm 74.7 82.28 300 300 300 300SAR 5.37 5.33 5.85 5.85 5.85 5.85 Birzeit Lab, ICP

instrumentPO4-P ppm 16.3 11.93 30 30 30 30 Birzeit Lab, ICPinstrumentAl ppm 0.10 0.05 5 5 5 5

0.001Birzeit Lab, ICPinstrument

Cu ppm 0.035 0.013 0.2 0.2 0.2 0.2Fe ppm 0.113 0.07 5 5 5 5Mn ppm BDL 0.04 0.2 0.2 0.2 0.2Ni ppm 0.054 BDL 0.2 0.2 0.2 0.2Pb ppm 0.03 0.03 0.2 0.2 0.2 0.2Se ppm BDL BDL 0.02 0.02 0.02 0.02Cd ppm 0.01 BDL 0.01 0.01 0.01 0.01Zn ppm 0.08 0.16 2 2 2 2Cn ppm BDL BDL 0.05 0.05 0.05 0.05Cr ppm <0.04 BDL 0.1 0.1 0.1 0.1Hg ppm <0.05 ppb 0.44 ppb 0.001 0.001 0.001 0.001Co ppm BDL BDL 0.05 0.05 0.05 0.05B ppm 0.15 0.065 0.7 0.7 0.7 0.7Ag ppm BDL 1 Birzeit Lab, ICP

instrumentE. coli (Colony/100ml) Absent Absent 100 1000 1000 1000 Birzeit Lab, Iso methodNematodes (eggs/L) Absent Absent 1>= 1>= 1>= 1>= Birzeit Lab, StMe

methodBDL = below detection limit

27

Table (2): Quality of the treated water (NWWTP) with comparison of reuse standard (34/2014) 2018

Maximum limits forchemical andbiologicalproperties

KfW reuseInsideprojectsampled8\12\2018

Sand Filterand UV

USAID reuseprojectsampled8\12\2018

Gravel FilterandChlorination

Quality of Tech. Spec 34-2014

Method of Testing

HighQuality(A)

GoodQuality(B)

MediumQuality(C)

LowQuality(D)

(BOD5) mg/l <5 <5 20 20 (BOD5)mg/l

<5 <5suspended solids(TSS) mg/l

<2 <2 30 30 suspendedsolids(TSS)mg/l

<2 <2FC (Colony/100ml) Nill Nill 200 1000 FC

(Colony/100ml)

Nill Nill(COD) mg/l 14 16 50 50 (COD)

mg/l14 16

Dissolved Solids(TDS) mg/l

725 811 1200 1500 DissolvedSolids(TDS)mg/l

725 811pH 7.65 7.79 6--9 6--9 pH 7.65 7.79Fat, Oil, & Greasemg/l

- - 5 5 Fat, Oil,&Greasemg/l

- -

-

-

Phenol mg/l - - 0.002 0.002 Phenolmg/l

-MBAS - - 15 15 MBAS -NO3-N ppm 10.16 8.83 20 20 NO3-N

ppm10.16 8.83

-NH4-N mg/l - - 5 5 NH4-N

mg/l-

Total nitrogen 31.06 40.3 40 40 Totalnitrogen

31.06 40.3CL ppm 156.16 159.15 400 400 CL

ppm156.16 159.15

SO4 ppm 56.94 51.32 300 300 SO4

ppm56.94 51.32

Na ppm 132.3 161 200 200 Nappm

132.3 161

16.64

88.6

Mg ppm 16.54 16.64 60 60 Mgppm

16.54Ca ppm 90 88.6 300 300 Ca

ppm90

SAR 3.36 4.12 5.85 5.85 SAR 3.36 4.12PO4-P ppm 9.32 9.28 30 30 PO4-P

ppm9.32 9.28

Al ppm 0.051 0.052 5 5 Al ppm 0.051 0.052

N.D

N.D

0.09

N.D

N.D

N.D

N.D

0.027

-

N.D

-

N.D

0.052

Cu ppm N.D N.D 0.2 0.2 Cuppm

N.DFe ppm N.D N.D 5 5 Fe

ppmN.D

Mn ppm 0.012 0.09 0.2 0.2 Mnppm

0.012Ni ppm N.D N.D 0.2 0.2 Ni

ppmN.D

Pb ppm N.D N.D 0.2 0.2 Pbppm

N.DSe ppm N.D N.D 0.02 0.02 Se

ppmN.D

Cd ppm N.D N.D 0.01 0.01 Cdppm

N.DZn ppm 0.028 0.027 2 2 Zn

ppm0.028

Cn ppm - - 0.05 0.05 Cnppm

-Cr ppm N.D N.D 0.1 0.1 Cr

ppmN.D

Hg ppm - - 0.001 0.001 Hgppm

-Co ppm N.D N.D 0.05 0.05 Co

ppmN.D

B ppm N.D 0.052 0.7 0.7 B ppm N.DAg ppm - - Ag

ppm- -

E. coli (Colony/100ml) Nill Nill 100 1000 E. coli(Colony/100ml)

Nill NillNematodes (eggs/L) Absent Absent 1>= 1>= Nemato

des(eggs/L)

Absent Absent

28

11.4 Summary of Executed Reuse Pilot Projects

11.4.1 Reuse Inside scheme Project

Tertiary treated wastewater by sand filtration and UV disinfection with a capacity

of 10 m3/hr.

Planted 40 Donums of lands Inside Nablus WWTP

The main objective of this scheme is getting results to be as educational project.

Funded by KfW with 426,000 €.

The system is controlled by an irrigation controller that use Radio frequency to

give the open and close command to the valves, each 18 plot get its specific

amount of water inserted by the controller, as a pilot project each crop should

get the specific water requirement separately as the crop water requirement,

also the fruit trees and alfalfa is connected to a fertilizer (chemical injector Type)

controlled by the irrigation controller.

Figure (24): Planted lands inside Nablus plant (reuse inside scheme)

28




of 10 m3/hr.











28




of 10 m3/hr.











29

Table (3): Type of crops which have been planted in Reuse inside Scheme pilot project

Common name Name In Arabic Age (Year) Root stock pollinator %

Almond Tree لوز 3 GF 5%

Pistachio فستق حلبي 3 10%

pecan Walnut انكجوز بی 3 Pecan seed

Walnut جوز 3

Pomelo بوملي 3 Bitter orange

Lemon لیمون 3 Bitter orange

Olive Tree زیتون 1.5

Pomegranate رمان 3

Apple تفاح آنا 2 Malos 10%

Persimmon فرسمونا 2 Local seedlings

Apricot مشمش 2 GF

Peach دراق 2 GF

Avocado افوغادو 2 West India 20%

Fodder crops Alfalfa, barly,vetch

seeds

11.4.2 Compete Reuse Project

Tertiary treated wastewater by gravel filters and chlorination unit, with a capacity

of 60 m3/hr.

The project is planted around 140 Donums of farmer’s lands outside Nablus

WWTP fence.

The goal of the project is to create new opportunities and show the farmers of

the area that the treated wastewater is suitable for planting.

Funded by USAID within Compete project with 500,000 $.

The method of irrigation is Surface Drip irrigation System.

The system is controlled manually, it takes its water from a reservoir tank placed

at a high point and it delivers water by gravity. The tank supplied from a

pumping station in the WWTP

30

Figure (25): Trees planted in USAID (Compete project) depicted in blue color

Table (4): Type of Trees which have been planted in Compete Reuse pilot project

Common name Name InArabic

Age

(Year)

containersize

(litre)

Rootstock Variety Pollinator pollinator

%

Almond Tree لوز 3 7 GF Om Al Fahm K 53-54 5%

Olive Tree زیتون 1.5 10 K18

Pomegranate رمان 3 10 Wonderful

Apple تفاح آنا 2 15 Malos Ana EinShemer

10%

Apricot مشمش 2 10 GF Hamawe

Fig تین 2 15

30




Age

(Year)

containersize

(litre)


%





10%


Fig تین 2 15

30




Age

(Year)

containersize

(litre)


%





10%


Fig تین 2 15

31

11.4.3 Reuse outside scheme (under implementation)

120 Donum, outside the plant

Tertiary treatment by Disc filters and UV unit

Treatment capacity= 100 m3/hr

Funded by German Government and EU through KfW

Figure (26): Intended planting lands in Reuse outside scheme of 120 donums.



Age

(Year)

containersize

(litre)


%


Olive Tree زیتون 2 20 K18

Pecan walnutTree and Alfalfa(Intercropping)

جوز البیكانوبرسیم حجازي

)زراعات بینیة( 3 20 Pecan

Alfalfa برسیم seed

31









Age

(Year)

containersize

(litre)


%







31









Age

(Year)

containersize

(litre)


%







32

11.5 Overview on future Reuse projects

11.5.1 Strategic Reuse Project 2,000+

Planting around 2,000+ Donums

Tertiary treatment by sand filters and UV unit

Treatment capacity= 10,000 m3/day

Funded by German Government through KfW with a finance of 10,000,000 €.

Figure (27): Wastewater Reuse Project-Nablus 2,000+

11.6 ResultsThe growth status of the plants which have been planted inside the Nablus WWTP was

monitored. Table (4) shows the assessment of agricultural experts for the growth status of

the different plants types. Also figure (28) shows the growth of olive trees in two different

pictures which have been captured within duration of less than one year.

Table (6): Results from reuse pilot project inside scheme

Crop and plantingdate

Growthstatus


Growthstatus

Almond Tree Very Good Olive Tree ExcellentPistachio Excellent Pomegranate ExcellentPecan Excellent Apple ExcellentWalnut (Camel eye) Excellent Persimmon goodPommel Good Apricot ExcellentLemon Good Peach Excellent

Avocado Very Good

32














Growthstatus


Growthstatus


Avocado Very Good

32














Growthstatus


Growthstatus


Avocado Very Good

33

Figure (28): A comparison between AlfaAlfa area (before and after)

11.7 Summary of all reuse projects of Nablus PlantThis section is summarizing reuse projects of Nablus plant.

Table (7): Summary of Nablus Plant reuse projects

No Reuse Projects Area(Donum)

Quantity ofTWW (m3)

\Year

Cost(Euro)

Date of TakingOver

1 Reuse Inside WWTP scheme(Pilot) 40 35,000 462,000 Jan-2017

2 Compete Project (Pilot) 140 80,000 500,000 June-2017

3 Reuse outside WWTP scheme 120 115,000 1,500,000 Jan-2019

4 Wastewater Reuse Project-Nablus 2,000+ 70% of treatedwater 10,000,000 End of 2020

33





Quantity ofTWW (m3)

\Year

Cost(Euro)

Date of TakingOver





33





Quantity ofTWW (m3)

\Year

Cost(Euro)

Date of TakingOver





34

12. Photovoltaic system

Within the frame of financial and technical cooperation Nablus Municipality and Nurnberg

city -Germany has signed financial agreement to implement photovoltaic system at the

Wastewater Treatment Plant Nablus West. The project has been implemented and

started use of sun energy on May 2017. The total produced energy in 2018 was 123,814

Kwh.

The project aimed at supply and install ground mounted On-grid PV Systems at

Wastewater Treatment Plant -Nablus West with capacity of 123 kWp and east-west

arrays orientation as pilot project. This pilot project contributed with about 10% of the total

power demand of the WWTP.

Figure (29): photovoltaic system

34






Kwh.






34






Kwh.






35

13. Future Improvements

Implementation of the Covering of the sludge storage yard.

Using of tertiary treated water for irrigation in the reuse for outside scheme fordifferent crops

Using of dewatered digested sludge in agriculture as pilot projects for furtherInvestigations

Installing more PV solar panels to increase the covering rate of the energy demandand using more renewable green energy.

14. Problems & Challenges in 2019

Unavailability of spare parts in local market.

Keep the staff of the WWTP.

Sludge Disposal:

1. High Cost of sludge disposal in Zeharet Al-Fenjan at 75 NIS/ton.

2. As per Palestinian standard, it is not allowed to reuse sludge in agriculturedue to high Water content in sludge of 75%

36

15. Staff

Waste Water Treatment Plant Nablus - WestOrganization Structure

Technical AdviserSuleiman Abu Ghosh

Chief OperatorYousef Abu Jaffal

Process EngineerMaintenance EngineerAdministrativeAgricultural engineerMohammad HumaidanAnas BarqAssistanceYazan Odeh

Sameh Bitar

Lab TechnicianWWTP SCADAGuardsAgriculture workersRola Abu SlamaAdminestratorRami HasanBara'a Fakr Aldeen

Amer ShanteerZeidan KayedAla'a Abu GazalWWTP OperatorZeiad Nasser

Abed al hadi NorieWWTP M.TechniciansRami HasebaMohammad TawashiOffice boy

Khaled MakhzomMohammad HashashAmjad ShanteerWWTP E.Technicians

Ahmad Yaish

LaborIsmail Shehadeh

Mohammad Azzam

37

Suleiman Abu Ghosh

- Technical Adviser

Yousef Abu Jaffal

-Nablus WWTP Chief

Operator

Mohammad Homeidan

-Process Engineer &

Lab Officer in Nablus

WWTP

Anas Barq

- Electrical Engineer

Sameh Bitar

-Administrative Secretary

& Accountant

Rola Abu Slama

-Lab Technician

Amer Shanteer

- WWTP SCADA

Administrator

Yazan Oudeh

-Agricultural engineer

Operators

Khaled Makhzom Amjad Shanteer Rami Hasiba Abdel hadi Norie

37

Suleiman Abu Ghosh

- Technical Adviser

Yousef Abu Jaffal

-Nablus WWTP Chief

Operator

Mohammad Homeidan

-Process Engineer &


WWTP

Anas Barq


Sameh Bitar


& Accountant

Rola Abu Slama

-Lab Technician

Amer Shanteer

- WWTP SCADA

Administrator

Yazan Oudeh


Operators


37

Suleiman Abu Ghosh

- Technical Adviser

Yousef Abu Jaffal

-Nablus WWTP Chief

Operator

Mohammad Homeidan

-Process Engineer &


WWTP

Anas Barq


Sameh Bitar


& Accountant

Rola Abu Slama

-Lab Technician

Amer Shanteer

- WWTP SCADA

Administrator

Yazan Oudeh


Operators


38

Electro mechanic Technicians

Mohammad Tawashi Ahmad Yaish

office boy

Mohammad Hashash

Labor

Mohammad Azzam Ismail Shehadeh

Agriculture

Ala'a Abu Gazal Bara’a Fakrldeen

Guards

Rami Hasan Zeidan Kayed Zeiad Nasser

38



office boy

Mohammad Hashash

Labor


Agriculture


Guards


38



office boy

Mohammad Hashash

Labor


Agriculture


Guards


39

16. Annexes

40

Annex 01: Graphs

Graph 1: Average wastewater effluent

Graph 2: Average treated wastewater effluent

450.0

475.0

500.0

525.0

550.0

575.0

600.0

625.0

650.0

675.0

700.0

Jan

Feb

Mar Ap

r

May Jun Jul

Aug

Sep

Oct

Nov De

c

Vens

uri r

eadi

ngs m

3/hr

month - 2018

Venturi readings m3/hr

Average = 537 m3/hr

10,00010,50011,00011,50012,00012,50013,00013,50014,00014,50015,00015,50016,00016,50017,000

Jan

Feb

Mar Ap

r

May Jun Jul

Aug

Sep

Oct

Nov De

c

Out

flow

m3/

day

month - 2018

Outflow m3/day

Average = 12895m3/day

41

Graph 3: Monthly dissolved oxygen concentration pattern in the aeration tank no. (1)

Graph 4: Monthly dissolved oxygen concentration pattern in tank no. (2)

1.481.515

1.551.585

1.621.655

1.691.725

1.761.795

1.831.865

1.91.935

1.972.005

2.04

Jan

Feb

Mar Ap

r

May Jun Jul

Aug

Sep

Oct

Nov De

c

DO a

t AT1

mg/

l

month - 2018

DO at AT1 mg/l

Average = 1.76 mg/l

1.45

1.485

1.52

1.555

1.59

1.625

1.66

1.695

1.73

1.765

1.8

1.835

Jan

Feb

Mar Ap

r

May Jun Jul

Aug

Sep

Oct

Nov De

c

DO a

t AT2

mg/

l

month - 2018

DO at AT2 mg/l

Average = 1.7 mg/l

42

Graph 5: The COD concentration in the influent of WWTP

Graph 6: The COD concentration in the effluent of the treated waste water

650

700

750

800

850

900

950

1000

1050

1100

1150

1200

Jan

Feb

Mar Ap

r

May Jun Jul

Aug

Sep

Oct

Nov De

c

COD

Inle

t mg/

l

month - 2018

COD Inlet mg/l

Average = 957 mg/l

Design =1100 mg/l

22.00

32.00

42.00

52.00

62.00

72.00

82.00

92.00

102.00

Jan

Feb

Mar Ap

r

May Jun Jul

Aug

Sep

Oct

Nov De

c

COD

Out

let m

g/l

month - 2018

COD Outlet mg/l

Average = 39 mg/l

Design = 100 mg/l

43

Graph 7: The correlation between CODout and BOD5eff

Graph 8: The BOD5 concentration in the effluent of the treated wastewater

y = 4.9985xR² = 0.987

25

30

35

40

45

50

55

60

65

70

75

5 7 9 11 13 15 17 19

COD

out m

g/l

BOD 5 out mg/l

5.006.007.008.009.00

10.0011.0012.0013.0014.0015.0016.0017.0018.0019.0020.0021.00

Jan

Feb

Mar Ap

r

May Jun Jul

Aug

Sep

Oct

Nov De

c

BOD

Out

let m

g/l

month - 2018

BOD Outlet mg/l

Average = 7.8 mg/l

Design = 20 mg/l

44

Graph 9: TSS concentration of the treated wastewater (TSS)

Graph 10: Total Nitrogen for influent and effluent (TN)

2.00

7.00

12.00

17.00

22.00

27.00

32.00

Jan

Feb

Mar Ap

r

May Jun Jul

Aug

Sep

Oct

Nov De

c

TSS

Out

let m

g/l

month - 2018

TSS Outlet mg/l

Average = 10 mg/l

Design = 30 mg/l

0

10

20

30

40

50

60

70

80

90

100

110

Jan

Feb

Mar Ap

r

May Jun Jul

Aug

Sep

Oct

Nov De

c

Tota

l Nitr

ogen

mg/

l

Month - 2018

TotalNitrogenoutlet mg/l

AverageTotalNitrogen 21outlet mg/l

TotalNitrogeninlet mg/l

AverageTotalNitrogen 84inlet mg/l

45

Graph 11: The average produced quantities of biogas

Graph 12: Average pH of the inlet wastewater

1450155016501750185019502050215022502350245025502650

Jan

Feb

Mar Ap

r

May Jun Jul

Aug

Sep

Oct

Nov De

c

Biog

as q

uant

ity N

m3/

day

Month - 2018

Biogas quantityNm3/day

Average Biogasquantity = 2113Nm3/day

7.57.55

7.67.65

7.77.75

7.87.85

7.97.95

88.05

8.18.15

8.28.25

8.38.35

8.48.45

8.5

Jan

Feb

Mar Ap

r

May Jun Jul

Aug

Sep

Oct

Nov De

c

pH

month - 2018

PH

Average = 8

46

Graph 13: Mixed liquor suspended solids concentration (MLSS) in aeration tanks

Graph 14: Conductivity of the inlet flow

3.13.23.33.43.53.63.73.83.9

44.14.24.34.44.54.6

Jan

Feb

Mar Ap

r

May Jun Jul

Aug

Sep

Oct

Nov De

c

MLS

S

month - 2018

MLSS

Average= 4g/l

1100115012001250130013501400145015001550160016501700175018001850

Jan

Feb

Mar Ap

r

May Jun Jul

Aug

Sep

Oct

Nov De

c

CON

D

month - 2018

COND

Average =1452 µS/cm

47

Graph 15: Total dissolved solids in the effluent

Graph 16: Average monthly treated wastewater and power consumption

650

675

700

725

750

775

800

825

850

875

900

Jan

Feb

Mar Ap

r

May Jun Jul

Aug

Sep

Oct

Nov De

c

TDS

month - 2018

TDS mg/l

Average = 800 mg/l

190,000205,000220,000235,000250,000265,000280,000295,000310,000325,000340,000355,000370,000385,000400,000415,000430,000445,000460,000475,000490,000505,000520,000

Jan

Feb

Mar Ap

r

May Jun Jul

Aug

Sep

Oct

Nov De

c

trea

ted

wat

er a

nd E

lect

rical

con

sum

ptio

n

Month - 2018

Treater Waterquantity m3

Averagetreated water= 387291 m3

ElectricalconsumptionkWh

Average Eleconsumption= 262382kWh

48

Graph 17: Power requirement kWh/kg COD treated

Graph 18: Power requirement kWh/m3 treated

0.550.570.590.610.630.650.670.690.710.730.750.770.790.810.830.850.870.890.910.930.950.970.99

Jan

Feb

Mar Ap

r

May Jun Jul

Aug

Sep

Oct

Nov De

c

Kwh/

Kg C

OD

rem

oved

Month - 2018

Kwh/Kg CODremoved

Average =0.74Kwh/Kg CODremoved

0.40.435

0.470.505

0.540.575

0.610.645

0.680.715

0.750.785

0.820.855

0.890.925

0.960.995

Jan

Feb

Mar Ap

r

May Jun Jul

Aug

Sep

Oct

Nov De

c

Kwh/

Trea

ted

m3

month - 2018

Kwh/Treatedm3

Average=0.69Kwh/Treatedm3

49

Graph 19: Expenditures versus collection

Graph 20: Expenditures breakdown 2018

0

500,000

1,000,000

1,500,000

2,000,000

2,500,000

3,000,000

3,500,000

4,000,000

2014

2015

2016

2017

2018

NIS

Year

Totalincome

Totalexpenses

Indirectexpenses

Electricity42%

Salariesand wages

16%

Otherdepartmentsparticipation

13%

Transportationand land filling

15%

Chemicalsconsumables

5%

Insurance3%

Fuels2%

O&M2%

Vehicles1%

Administrativeexpenses

1%

Electricity

Salaries and wages

Other departmentsparticipationTransportation andland fillingChemicalsconsumablesInsurance

Fuels

O&M

Vehicles

Administrativeexpenses

50

Annex 03: Performance summary

Parameters

Designvalue2020

Treatmentefficiency

% Average

Month - 2016

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov DecAverageinlet flow

m3/d 14,000 ----- 12,895 16,690 16,447 14,855 11,162 11,787 11,712 11,632 11,634 11,635 11,526 11,362 14,293Inlet COD

mg/L 1,100 ----- 957 779 975 1,076 972 1,010 944 1,056 1,146 970 1,090 711 757Outlet COD

mg/L 100 96% 39 30 36 38 41 43 37 54 45 47 36 36 30Outlet

BOD5 mg/L 20 98% 8 6 7 8 8 9 7 11 9 9 7 7 6Inlet BOD5

mg/L 550 478 378 356 545 485 573 528 472 505 486 538 485 389Sludge age

(days) 13.7 ----- 16 16 20.2 20 11 8 13 11 11 16 15 21 26MLSS g/L 3 ----- 4 4.56 4.3 4.2 4.1 4 4 3.17 3.24 3.57 3.7 3.7 4.5TSS inlet

mg/L 500 439 347 357 455 430 552 455 417 483 439 495 461 371TSS outlet

mg/L 30 98% 10 6 9 9 11 14 8 12 14 16 11 9 3kWh/kg

COD 0.8 ----- 0.76 0.7 0.77 0.8 0.9 0.84 0.93 0.78 0.64 0.8 0.64 0.67 0.6

Annex 04: Power consumption

2018DecNovOctSepAugJulJunMayAprMarFebJanAvgMonth

443,095340,846357,300349,040360,658360,591351,361365,390334,871460,520460,520517,378391,798Treated wastewater

quantity m3

135,00880,04096,603121,780109,188141,30890,48658,270119,796113,047132,018151,635

262,382

Total electricalconsumption kWhr

7,7576,90012,64216,16017,74020,04221,57321,000PV electrical

production kWhr

95,228158,550175,823151,790166,347143,342163,355176,220132,992161,56077,28273,099CHP electricalproduction kWhr

0.540.720.800.830.810.840.780.700.750.600.450.430.69kWhr per m3

51

Annex 05: Additional lab Tests in WWTP Lab2018

AverageValuesTest / JanFebMarAprMayJunJulAugSepOctNovDec

30.0036.0035.0047.0045.0054.0037.0043.0041.0038.0036.0029.0039Average

COD out mg/l 44.0047.0046.0082.0062.0085.0049.0052.0056.0046.0046.0036.0054Max

20.0032.0029.0035.0038.0040.0030.0028.0030.0032.0030.0025.0031Min

6.007.007.009.009.0011.007.009.008.008.007.006.007.8Average

BOD out mg/l 9.009.009.0016.0012.0017.009.8010.0011.009.009.007.0011Max

4.006.006.007.008.008.006.005.006.006.006.005.006Min

3.702.000.9021.4011.7020.001.301.400.001.501.000.005AverageNH4-N out

mg/l 7.003.600.9024.8011.7029.702.301.700.001.501.000.007Max

0.300.400.9018.0011.7010.200.301.200.001.501.000.004Min

15.0016.8012.900.7017.908.702.604.604.609.008.0012.009AverageNO3-N out

mg/l 16.0019.0012.900.7017.908.702.605.204.6012.0010.3020.4011Max

14.0014.6012.900.7017.908.702.604.004.606.006.306.308Min

20.0021.0022.0012.0038.0048.006.508.006.0010.0022.0041.5021Average

TN out mg/l 29.0024.0022.0012.0041.0066.008.009.007.0010.0024.0078.0028Max

15.0017.0022.0012.0034.0030.005.007.005.0010.0019.005.0015Min

1.304.004.062.002.005.253.963.254.003.303.303.183Average

PO4-P out mg/l 1.464.005.122.002.005.604.004.004.203.303.803.184Max

1.164.003.002.002.004.903.882.503.803.302.803.183Min

3.009.0011.0016.0014.0012.008.0014.0011.009.009.006.0010Average

TSS out mg/l 6.0020.0024.0046.0026.0030.0020.0030.0032.0024.0020.0012.0024Max

2.0020.002.002.004.002.002.002.002.002.002.002.004Min

4.564.304.204.104.004.003.173.243.573.003.704.504Average

MLSS mg/l 5.295.194.606.406.004.503.713.644.103.404.505.205Max

3.373.453.903.003.003.702.662.863.002.602.703.703Min

52

Annex 06: External laboratory analysisQuality of the sludge (NWWTP) with comparison of standard (59/2015)

ElementsSampled on

Obligatory Method of Testing

05/09/2016 15/01/2017Tech.Ins59/2015

Cd (ppm) 0.27 0.48 20 Birzeit Lab, ICP instrumentCu (ppm) 71.63 123.9 1,000 Birzeit Lab, ICP instrumentNi (ppm) 6.21 11.2 300 Birzeit Lab, ICP instrumentPb (ppm) 7.5 13.1 750 Birzeit Lab, ICP instrumentZn (ppm) 243.46 360.3 2,500 Birzeit Lab, ICP instrumentCr (ppm) 6.93 13.4 400 Birzeit Lab, ICP instrumentAs (ppm) N.D 0.29 N.A Birzeit Lab, ICP instrumentMo (ppm) 1.21 0.4 N.A Birzeit Lab, ICP instrumentSe (ppm) N.D N.D N.A Birzeit Lab, ICP instrumentHg (ppm) 0.58 0.47 16 Birzeit Lab, DMA-80 instrument

Phosphorus (ppm) 3,299 6,771 N.A Birzeit Lab, ICP instrumentFC (cfu/g) 4,300 - N.A Birzeit Lab, iso instrument

Salmonella (cu/g) Nil Nil N.A Birzeit Lab, iso instrumentConductivity µs/cm - 1,180 Birzeit Lab, iso instrument

Annex 07 : Quality of the Sludge Tests Results at different moisturecontent from Birzeit University Labs

Item Results - June 2018 Comparison with standard of

Elements

Sludge Sludge50%

moisture

Sludge10%

moisture 1st class 2nd class 3rd class70%

moistureAs (ppm) N.D N.D N.D 41 75 75Cd (ppm) N.D N.D N.D 40 40 85Cr (ppm) 10.4 22 44.2 900 900 3,000Cu (ppm) 50.7 116 209 1,500 3,000 4,300Hg (ppb) 229 588 1,020 17 57 57Mo (ppm) N.D N.D N.D 75 75 75Ni (ppm) 10.4 22 43 300 400 420Se (ppm) N.D N.D N.D 100 100 100Pb (ppm) N.D N.D N.D 300 840 840Zn (ppm) 223.6 507 912 2,800 4,000 7,500

Moisture % 77.8 51.2 11.1 10% 50% 50%FC (cfu/g) 17,000 NA NA 1,000 2,000,000 ---Salmonella

(cu/g) Absent\25gr Absent\25gr Absent\25gr 3 ---- ---

wastewater treatment plant - nabluswwtp.nablus.org/wp-content/uploads/2019/03/final-2018-report.pdf1...

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